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| author | Alex Williamson <alex.williamson@redhat.com> | 2013-04-16 13:49:18 -0600 |
|---|---|---|
| committer | Gleb Natapov <gleb@redhat.com> | 2013-04-28 12:58:56 +0300 |
| commit | 2a5bab1004729f3302c776e53ee7c895b98bb1ce (patch) | |
| tree | 281519b89e9f766a3d83c6978850e9eb72b3e0df /arch/ia64 | |
| parent | 064d1afaa5a60fc391d0b4b77599fc8f63f99cd3 (diff) | |
| download | linux-2a5bab1004729f3302c776e53ee7c895b98bb1ce.tar.bz2 | |
kvm: Allow build-time configuration of KVM device assignment
We hope to at some point deprecate KVM legacy device assignment in
favor of VFIO-based assignment. Towards that end, allow legacy
device assignment to be deconfigured.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Diffstat (limited to 'arch/ia64')
| -rw-r--r-- | arch/ia64/include/uapi/asm/kvm.h | 1 | ||||
| -rw-r--r-- | arch/ia64/kvm/Kconfig | 13 | ||||
| -rw-r--r-- | arch/ia64/kvm/Makefile | 6 | ||||
| -rw-r--r-- | arch/ia64/kvm/kvm-ia64.c | 2 |
4 files changed, 14 insertions, 8 deletions
diff --git a/arch/ia64/include/uapi/asm/kvm.h b/arch/ia64/include/uapi/asm/kvm.h index ec6c6b301238..99503c284400 100644 --- a/arch/ia64/include/uapi/asm/kvm.h +++ b/arch/ia64/include/uapi/asm/kvm.h @@ -27,7 +27,6 @@ /* Select x86 specific features in <linux/kvm.h> */ #define __KVM_HAVE_IOAPIC #define __KVM_HAVE_IRQ_LINE -#define __KVM_HAVE_DEVICE_ASSIGNMENT /* Architectural interrupt line count. */ #define KVM_NR_INTERRUPTS 256 diff --git a/arch/ia64/kvm/Kconfig b/arch/ia64/kvm/Kconfig index 043183a06409..990b86420cc6 100644 --- a/arch/ia64/kvm/Kconfig +++ b/arch/ia64/kvm/Kconfig @@ -21,8 +21,6 @@ config KVM tristate "Kernel-based Virtual Machine (KVM) support" depends on BROKEN depends on HAVE_KVM && MODULES - # for device assignment: - depends on PCI depends on BROKEN select PREEMPT_NOTIFIERS select ANON_INODES @@ -51,6 +49,17 @@ config KVM_INTEL Provides support for KVM on Itanium 2 processors equipped with the VT extensions. +config KVM_DEVICE_ASSIGNMENT + bool "KVM legacy PCI device assignment support" + depends on KVM && PCI && IOMMU_API + default y + ---help--- + Provide support for legacy PCI device assignment through KVM. The + kernel now also supports a full featured userspace device driver + framework through VFIO, which supersedes much of this support. + + If unsure, say Y. + source drivers/vhost/Kconfig endif # VIRTUALIZATION diff --git a/arch/ia64/kvm/Makefile b/arch/ia64/kvm/Makefile index 511f64a78d56..1a4053789d01 100644 --- a/arch/ia64/kvm/Makefile +++ b/arch/ia64/kvm/Makefile @@ -49,10 +49,10 @@ ccflags-y := -Ivirt/kvm -Iarch/ia64/kvm/ asflags-y := -Ivirt/kvm -Iarch/ia64/kvm/ common-objs = $(addprefix ../../../virt/kvm/, kvm_main.o ioapic.o \ - coalesced_mmio.o irq_comm.o assigned-dev.o irqchip.o) + coalesced_mmio.o irq_comm.o) -ifeq ($(CONFIG_IOMMU_API),y) -common-objs += $(addprefix ../../../virt/kvm/, iommu.o) +ifeq ($(CONFIG_KVM_DEVICE_ASSIGNMENT),y) +common-objs += $(addprefix ../../../virt/kvm/, assigned-dev.o iommu.o) endif kvm-objs := $(common-objs) kvm-ia64.o kvm_fw.o diff --git a/arch/ia64/kvm/kvm-ia64.c b/arch/ia64/kvm/kvm-ia64.c index 032c54d63c3d..dcc560729c20 100644 --- a/arch/ia64/kvm/kvm-ia64.c +++ b/arch/ia64/kvm/kvm-ia64.c @@ -1368,9 +1368,7 @@ void kvm_arch_sync_events(struct kvm *kvm) void kvm_arch_destroy_vm(struct kvm *kvm) { kvm_iommu_unmap_guest(kvm); -#ifdef KVM_CAP_DEVICE_ASSIGNMENT kvm_free_all_assigned_devices(kvm); -#endif kfree(kvm->arch.vioapic); kvm_release_vm_pages(kvm); } |